By Surendra | June 10, 2020 0 Comment 0% 10 Created by Surendra Current Electricity Quiz in English Set 1 All Important Question Answers for Electrician Related Exams 1 / 25 With rise in temperature the resistance of pure metals first increases and then decreases decreases remains constant increases 2 / 25 Insulating materials have the function of preventing an open circuit between the voltage source and the load preventing a short circuit between conducting wires conducting very large currents storing very high currents 3 / 25 For which of the following ‘ampere second’ could be the unit ? Power Charge Energy Reluctance 4 / 25 Which one of the following does not have negative temperature co-efficient ? Aluminium Paper Rubber Mica 5 / 25 A resistance having rating 10 ohms 10 W is likely to be a wire wound resistor variable resistor carbon resistor metallic resistor 6 / 25 Electric current passing through the circuit produces luminous effect thermal effect magnetic effect chemical effect 7 / 25 A 40 W bulb is connected in series with a room heater. If now 40 W bulb is replaced by 100 W bulb the heater output will decrease heater will burn out remain same increase 8 / 25 Resistance of a material always decreases if temperature of material is increased temperature of material is decreased number of free electrons available become more none of the above is correct 9 / 25 Which is the best conductor of electricity ? Carbon Copper Silver Iron 10 / 25 An electric filament bulb can be worked from All above A.C. supply only D.C. supply only Battery supply only 11 / 25 Resistance of a tungsten lamp as applied voltage increases none of the above remains same increases decreases 12 / 25 All of the following are equivalent to watt except amperes/volt joules/sec. amperes x volts (amperes) ohm 13 / 25 Which of the following materials has a negative temperature co-efficient of resistance? Brass Aluminum Copper Carbon 14 / 25 Which of the following statement is true both for a series and a parallel D.C. circuit? Currents are additive Power are additive Voltages are additive Elements have individual currents 15 / 25 Which of the following quantities remain the same in all parts of a series circuit ? Voltage Current Power Resistance 16 / 25 The resistance of a conductor varies inversely as temperature resistivity area of cross-section length 17 / 25 Ohm’s law is not applicable to carbon resistors circuits with low current densities high voltage circuits vacuum tubes 18 / 25 Whether circuit may be AC. or D.C. one following is most effective in reducing the magnitude of the current. Capacitor Inductor Reactor Resistor 19 / 25 Varistors are resistors with zero temperature coefficient carbon resistors non-linear resistors insulators 20 / 25 In an electric kettle water boils in 10 m minutes. It is required to boil the boiler in 15 minutes using same supply mains length of heating element has no effect on heating if water length of heating element should be increased none of the above length of heating element should be decreased 21 / 25 If the efficiency of a machine is to be high what should be low ? Input power kWh consumed Losses True component of power 22 / 25 With rise in temperature the resistance of semi-conductors increases remains constant first increases and then decreases decreases 23 / 25 When electric current passes through a metallic conductor its temperature rises. This is due to mutual collisions between conducting electrons collisions between conduction electrons and atoms mutual collisions between metal atoms the release of conduction electrons from parent atoms 24 / 25 Two resistors are said to be connected in series when both carry the same value of current same current passes in turn through both sum of IR drops equals the applied e.m.f. total current equals the sum of branch currents 25 / 25 The resistance of a parallel circuit consisting of two branches is 12 ohms. If the resistance of one branch is 18 ohms what is the resistance of the other ? 18 Q 64 Q 48 Q 36 Q कृपया सही सूचना भरें ताकि सर्टिफिकेट ईमेल पर भेजा जा सकें। NameEmailPhone NumberDistrictSchool/Coaching Name Your score is LinkedIn Facebook VKontakte 0% Restart quiz आपको यह क्विज अच्छी लगी तो 5 स्टार रेटिंग जरुर दें । Send feedback
